Improvement in joints for slate and other frames



UNITED STATES PATENT OFFICE.

FRANCIS SHENTON, OF SLA'IINGTON, PENNSYLVANIA.

IMPROVEMENT IN JOINTS FOR SLATE AND OTHER FRAMES.

To all whom fit may concer/z Be it known that I, FRANCIS SHENToN, ofSlatington, in the county of Lehigh and State of Pennsylvania, haveinvented a new and useful Joint for Slate and other Frames; and I dohereby declare that the same is described and represented in thefollowing specifications and drawings.

To enable others skilled in the art to make and use my new and improvedjoint, I will proceed to describe its construction and the inode ofmaking it, referring to the drawings, in which the same letters indicatelike parts in each of the figures.

Figure l is the plan of a frame with my new joints. Fig. 2 is the edge,and Fig. the end, ofthe frame.

The nature of my new joint for slates and other frames consists inmaking the joint in the peculiar manner described in this specificationand shown in the drawings. j

In the accompanying drawings, A is the slate; B B, the sides, and C Cthe ends, ofthe frame which surrounds the slate. Thejoints of this frameare formed by cutting the sides and ends on an angle of about forty-fivedegrecs or miter-line D about onehalf the width of the frame, thencutting them at about a right angle to the miter-linel) on the line E F,and then from F to G on a line parallel to Athe miter-line D, as shownin the drawings,

Fig. l, so that they will iit together. After the ends are iitted, asabove described, I `out which may be glued in and further secured by thepins K K, so as to make a rin strong joint, capable of great resistance,and pressure applied to the sides crowds the joints together, which is agreat advantage and convenience in clamping up the frames, saving bothtime and labor, and thereby lessening the cost and making the framecheaper. At the saine time I cut the joints I out oiI'` the extremecorners, so as not to groove through them, and after the joint is puttogether I round oft' the corner, as shown in the drawings. I do notintend to confine the lines of the-joint to an angle of forty-tivedegrees or miter, but to vary them whenever it shall be desirable oradvantageous to do so.

I believe I have described and represented my improved joint so as toenable any person skilled in the art to make and use it.

I will now state what I desire to secure by Letters Patent-to wit:

I cla-im- A joint formed by notching the sides and ends, as described,in combination with the spline or piece J and pins K K.

' FRANCIS SHENTON.

Witnesses HENRY KUNTZ, L. D. KRAUSE.

